Li-ion based solid state batteries: Computational, machine learning, analytical and experimental methods would be used to investigate into pressure effects on the system integration, performance and reliability of these batteries. Spin coating, thermal deposition, spray coating and annealing would be the main treatment and deposition methods used. The surfaces and cross section of the batteries would then be characterized with Scanning electron microscopy, Atomic Force Microscopy, spectrophotometer, Raman spectroscopy and transmission electron microscopy.